blues (blōōz) pl.n.
(used with a sing. or pl. verb)
A state of depression or melancholy. Often used with the.
A style of music that evolved from southern African-American secular songs and is usually distinguished by a strong 4/4 rhythm, flatted thirds and sevenths, a 12-bar structure, and lyrics in a three-line stanza in which the second line repeats the first: "The blues is an expression of anger against shame and humiliation"(B.B. King).
[Short for blue devils.] blues'man n., blues'y adj.